Southwest Airlines Co.
US ˙ NYSE ˙ US8447411088

SecurityLUV / Southwest Airlines Co.
InstitutionCandriam Luxembourg S.C.A.
Latest Disclosed Ownership19,000 shares
Latest Disclosed Value $ 713,830
Candriam Luxembourg S.C.A. reports 7.39% decrease in ownership of LUV / Southwest Airlines Co.

On April 30, 2026 - Candriam Luxembourg S.C.A. filed a 13F-HR form disclosing ownership of 19,000 shares of Southwest Airlines Co. (US:LUV) valued at $713,830 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on April 30, 2026 disclosing 20,516 shares of Southwest Airlines Co.. This represents a change in shares of -7.39% during the quarter. The current value of the position is $789,260 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-30 2026-03-31 13F SOUTHWEST AIRLS COM 844741108 19,000 -1,516 -7.39 714 -15.82 0.0037
2026-04-30 2025-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 20,516 20,516 848 0.0042
2026-02-13 2025-12-31 13F SOUTHWEST AIRLS COM 844741108 20,516 20,516 848 0.0042
2025-11-06 2025-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -11,975 -100.00 0 -100.00
2025-08-08 2025-06-30 13F SOUTHWEST AIRLS COM 844741108 11,975 11,975 388 0.0022
2023-11-13 2023-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -59,232 -100.00 0 -100.00
2023-08-08 2023-06-30 13F SOUTHWEST AIRLS COM 844741108 59,232 59,232 2,145 0.0155
2021-01-22 2020-12-31 13F SOUTHWEST AIRLS COM 844741108 0 -181,978 -100.00 0 -100.00
2020-10-19 2020-09-30 13F SOUTHWEST AIRLS COM 844741108 181,978 -461 -0.25 6,824 9.43 0.0641
2020-07-23 2020-06-30 13F SOUTHWEST AIRLS COM 844741108 182,439 -129,976 -41.60 6,236 -62.17 0.0658
2020-05-26 2020-03-31 13F SOUTHWEST AIRLS COM 844741108 312,415 0 0.00 16,486 -2.24 0.1827
2020-02-05 2019-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 312,415 -7,155 -2.24 16,864 -2.29 0.1807
2020-01-21 2019-12-31 13F SOUTHWEST AIRLS COM 844741108 312,415 -7,155 17 182,325.1823
2020-02-05 2019-09-30 13F/A-1 SOUTHWEST AIRLS COM 844741108 319,570 -22,279 -6.52 17,260 -0.13 0.2287
2019-10-21 2019-09-30 13F SOUTHWEST AIRLS COM 844741108 319,570 -22,279 17 213,648.3599
2019-08-01 2019-06-30 13F SOUTHWEST AIRLS COM 844741108 341,849 73,148 27.22 17,283 23.90 0.2156
2019-05-02 2019-03-31 13F SOUTHWEST AIRLS COM 844741108 268,701 74,358 38.26 13,949 54.42 0.1785
2019-02-14 2018-12-31 13F SOUTHWEST AIRLS COM 844741108 194,343 6,400 3.41 9,033 -23.04 0.1388
2018-11-07 2018-09-30 13F SOUTHWEST AIRLS COM 844741108 187,943 -84,527 -31.02 11,737 -15.34 0.1560
2018-08-14 2018-06-30 13F SOUTHWEST AIRLS COM 844741108 272,470 -62,761 -18.72 13,864 -27.80 0.2194
2018-05-09 2018-03-31 13F SOUTHWEST AIRLS COM 844741108 335,231 -325,160 -49.24 19,203 -55.57 0.3275
2018-02-07 2017-12-31 13F SOUTHWEST AIRLS COM 844741108 660,391 282,911 74.95 43,223 104.55 0.7478
2017-11-03 2017-09-30 13F SOUTHWEST AIRLS COM 844741108 377,480 335,448 798.08 21,131 709.00 0.3692
2017-07-31 2017-06-30 13F SOUTHWEST AIRLS COM 844741108 42,032 -144,976 -77.52 2,612 -74.02 0.0491
2017-04-21 2017-03-31 13F SOUTHWEST AIRLS COM 844741108 187,008 17,973 10.63 10,054 19.35 0.1946
2017-02-01 2016-12-31 13F SOUTHWEST AIRLS COM 844741108 169,035 -135,971 -44.58 8,424 -28.98 0.1933
2016-11-15 2016-09-30 13F SOUTHWEST AIRLS COM 844741108 305,006 95,992 45.93 11,862 44.73 0.2853
2016-07-26 2016-06-30 13F SOUTHWEST AIRLS COM 844741108 209,014 81,739 64.22 8,196 44.52 0.2131
2016-04-27 2016-03-31 13F SOUTHWEST AIRLS COM 844741108 127,275 127,275 0.00 5,671 0.1418
2015-10-19 2015-09-30 13F SOUTHWEST AIRLS COM 844741108 0 -21,355 -100.00 0 -100.00
2015-07-29 2015-06-30 13F SOUTHWEST AIRLS COM 844741108 21,355 -129,704 -85.86 707 -89.44 0.0147
2015-05-28 2015-03-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 151,059 -124,381 -45.16 6,693 -42.55 0.1348
2015-04-27 2015-03-31 13F SOUTHWEST AIRLS COM 844741108 151,059 6,692
2015-05-28 2014-12-31 13F/A-1 SOUTHWEST AIRLS COM 844741108 275,440 275,440 11,651 0.2436
2015-03-26 2014-12-31 13F SOUTHWEST AIRLS COM 844741108 275,440 275,440 11,657 0.2359
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.